Useful structures语法详解： 所谓主谓一致是指主语和谓语动词之间 , 即主语的人称和单复数形式决定着谓语动词对应的形式。The boy ___ diving.They ____ diving.Both Jack and Tim ___ diving.All of them ____ diving.Neither Jack nor Tim ___ walking.isareareisareFinish the following exercises:Bob Bob _____ a worker.isMike Mike and Bob _____ workers.areBoth Mike and Bob ____workers.areNeither Mike nor Bob ___a teacher.isBill Neither of them ___________ (know) how to teach English. knows/knowAll of them ______ workers.None of them ___________ (know) how to teach English.are knows/know主谓一致主要有以下几种情况：1. and 连接两个或两个以上单数名词或者代词作主语的时候 , 谓语动词有以下两种情况：(1) He and I _____both students of this school. 我和他都是这个学校的学生。如果指两个或两个以上不同的人或事物的时候 , 谓语动词用复数。语法一致原则(2) 但如果连接两个以上的名词指的是同一个人或物 , 或者指同一概念的时候 , 谓语要用单数。 The singer and dancer____ going to give us a performance. 那个歌唱家兼舞蹈演员要给我们表演。 The knife and fork ____on the table. 刀叉在桌子上。 isis2. 如果主语是不定式 , 动词 ing 形式或主语从句的时候 , 谓语动词用单数。 What he is doing seems very important. 他正在做的事情看起来很重要。 Collecting stamps is his hobby. 收集邮票是他的爱好。3. 定语从句的关系代词 who, which, that在从句中作主语时，要与先行词的人称和数保持一致。 Those who enjoy singing may join us. Tom, who is your friend, should help you.4. with, along with, together with, as well as, besides, like, without, except, but, including 如果句子中有这些连接词和主语连用 , 谓语动词的数随主语的变化而变化。例如： The teacher, together with his students, is planting trees in the street. 老师和他的学生们正在街道上植树。1. either ... or; neither ... nor; not only ... but also, whether...or 在句子中连接主语的时候或者在 there be...
